4,4'-Trimethylenedibenzoic acid bis(2-dimethylaminoethyl) ester hydrochloride Benzoic acid, 4,4'-trimethylenedi-, bis(2-dimethylaminoethyl) ester, hydrochloride Bis(dimethylaminoethyl) 4,4'-diphenyl-1,3-propanedicarboxylate hydrochloride DI0894600